commit c525135dac354892a45ad3d2f6de9450d393f09f Author: Mike Perry mikeperry-git@torproject.org Date: Wed Jun 5 11:50:44 2019 -0700

Bug 29034: Cleanup hs circuitmap when purpose changes.

Leave the other rend and hs_ident data around until circuit free, since code may still try to inspect it after marking the circuit for close. The circuitmap is the important thing to clean up, since repurposed intropoints must be removed from this map to ensure validity. --- changes/bug29034 | 5 +++++ src/core/or/circuituse.c | 6 ++++++ 2 files changed, 11 insertions(+)

diff --git a/changes/bug29034 b/changes/bug29034 new file mode 100644 index 000000000..e7aa9af00 --- /dev/null +++ b/changes/bug29034 @@ -0,0 +1,5 @@ + o Major bugfixes (Onion service reachability): + - Properly clean up the introduction point map when circuits change purpose + from onion service circuits to pathbias, measurement, or other circuit types. + This should fix some service-side instances of introduction point failure. + Fixes bug 29034; bugfix on 0.3.2.1-alpha. diff --git a/src/core/or/circuituse.c b/src/core/or/circuituse.c index 485c38905..18b419e99 100644 --- a/src/core/or/circuituse.c +++ b/src/core/or/circuituse.c @@ -3082,6 +3082,12 @@ circuit_change_purpose(circuit_t *circ, uint8_t new_purpose) circ->purpose, circuit_purpose_to_string(new_purpose), new_purpose); + + /* Take specific actions if we are repurposing a hidden service circuit. */ + if (circuit_purpose_is_hidden_service(circ->purpose) && + !circuit_purpose_is_hidden_service(new_purpose)) { + hs_circ_cleanup(circ); + } }

old_purpose = circ->purpose;